Flip4Mac to combine WMVs problem

I have 4 wmvs that I wanted to join into one file. I used Flip4Mac to open the WMVs in QT (that part
worked fine), but after combining the 4 wmvs (copying and pasting just like I do in QTPro with QT)s,
I can't save the resulting file as anything but .mov. I thought I'd be able to join the wmvs
and save the resulting file as the wmv that the files already were. Am I missing something?
After combining the 4 videos, I can play the combined video in WMPlayer (the F4M player),
and the video plays in QuickTime. I dragged the file over my Microsoft Windows Media Player
shortcut, which is the way to reassociate wmvs to Windows Media Player (again, Microsoft). So
now the combined file has the MS Windows Media logo, and if I click on it, it opens in MS WMP,
but only the segment that existed before adding the other videos were added. If I do a "Open With", and select
the F4M WMP, it shows all 4 combined videos in one file. All I want to
do is save that as the wmvit is. Any advice?
Ed

Ed I think you might have to upgrade to F4M pro, or studio or something to do this. I've found F4M player effective for opening WMV in QT etc. But as soon as you start wanting to do anything with the clips like edit or compile them you need to spend some cash. But others probably know a few tricks I don't.